mobile-shell / mobile-shell/mosh
Support smaller MTU when PMTUD is not available (e.g., some VPNs)
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- Dominant language
- C++
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Description
Hi,
I cannot get my mosh session to reconnect over IPsec VPN.
Server:
- Linux VM (Centos 6.2, kernel 2.6.32-220.13.1.el6.x86_64) in ESX cluster
- mosh 1.2.2
Client:
- Mac OS X 10.7.4 (Darwin Kernel Version 11.4.0)
- mosh 1.2.2
If I start a mosh session to the server over VPN, then disconnect the VPN, I get the blue banner at the top of my session, "mosh: Last contact x seconds ago" but if I reconnect the VPN the session does not reconnect. I just have to quit.
Any ideas? Would you expect this to work over VPN?
Thanks in advance,
Joe.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the reconnect failure with the listed Mosh 1.2.2 client and server over an IPsec VPN, then investigate how the session handles MTU discovery when PMTUD is unavailable. Done means a session can disconnect and reconnect successfully over a VPN requiring a smaller MTU.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- networking
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100